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+ / \ Sequoia 680 Chesapeake Dnve Redwood City CA 94063 (415) 364 9600 FAX(415) 364 9233 <br /> 1900 Bates Avenue Suite L Concord CA 94520 (510) 686 9600 FAX (510)686 9689 <br /> Analytical 819$taker Avenue Suite 8 Sacramento CA 95834 (916) 921 9600 FAX(916)921 0100 <br /> Blaine Tech Services, Inc Client Project ID 940510-K1, Shell, 620 W Charter Wa Sampled May 10, 1994 <br /> 985 Timothy Drive Sample Matrnc Water ReceNed May 11, 1994 <br /> San Jose, CA 95133 Analysis Method EPA 5030/8015 Mod /8020 Reported May 23, 1994 <br /> Attention Jim Keller First Sample# 4E74807 <br /> TOTAL PURGEABLE PETROLEUM HYDROCARBONS with BTEX DISTINCTION <br /> Reporting Sample Sample Sample Sample Sample Sample <br /> Analyte Limit I D. ID ID I.D. ID I D. <br /> ug/L 4E74807 4E74808 4E74809 4E74810 4E74811 4E74812 <br /> MW-7 MW-8 MW-9 MW-10 DUP ES <br /> Purgeable <br /> Hydrocarbons 50 6,500 2,300 44,000 N D 76,OD0 N D <br /> Benzene 0 50 330 N D 1,000 N D 1,300 N D <br /> Toluene 050 61 N D 1,900 N D 1,000 N D <br /> Ethyl Benzene 050 240 N D 1,300 N D 1,500 N D <br /> Total Xylenes 050 420 300 6,600 N D 12,000 N D <br /> Chromatogram Pattern C6-C12 C6-C12 C6-C12 -- C6-C12 -- <br /> Quality Control Data <br /> Report Limit Multiplication Factor 40 20 200 1 0 200 10 <br /> Date Analyzed 5/15/94 5/16/94 5/16/94 5/15/94 5/15/94 5/15/94 <br /> Instrument Identification GCHP-2 GCHP-17 GCHP-2 GCHP-3 GCHP-2 GCHP-3 <br /> Surrogate Recovery, % 95 104 110 93 121 96 <br /> (QC Limits = 70-130%) <br /> Purgeable Hydrocarbons are quantitated against a fresh gasoline standard <br /> Analytes reported as N 0 were not detected above the stated reporting limit <br /> WEQUOIA ANALYTICAL <br /> Sul �- <br /> Suzanne Chin <br /> Project Manager <br /> 4E74801 BLA <2> <br />